1. Frequency Polygons Example
The table below represents the marks obtained by children in an examination.
Mark
0 – 10
10 –20
20 –30
30 –40
40 –50
50 –60
60 –70
70 –80
80 –90
90 –100
Frequency 1 3 6 13 14 12 7 5 4
Represent this data on a frequency polygon

2. a) Draw a frequency polygon to represent the data
Example
The table below shows the distribution of weekly wages in two small factories
a) Draw a frequency polygon to represent the data
b) Comment on the results.
Weekly wage (£)
40-50
50-60
60-70
70-80
80-90
90-100
Factory A 1 3 7 11 12 17 20 15 4
Factory B 5 10 16 9